/** @file
  This header provides constants for most GPIO bindings.

  Most GPIO bindings include a flags cell as part of the GPIO specifier.
  In most cases, the format of the flags cell uses the standard values
  defined in this header.

  Copyright (c) 2021, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent
**/

#ifndef DT_BINDINGS_GPIO_GPIO_H_
#define DT_BINDINGS_GPIO_GPIO_H_

/* Bit 0 express polarity */
#define GPIO_ACTIVE_HIGH 0
#define GPIO_ACTIVE_LOW 1

/* Bit 1 express single-endedness */
#define GPIO_PUSH_PULL 0
#define GPIO_SINGLE_ENDED 2

/* Bit 2 express Open drain or open source */
#define GPIO_LINE_OPEN_SOURCE 0
#define GPIO_LINE_OPEN_DRAIN 4

//
// Open Drain/Collector is the combination of single-ended open drain interface.
// Open Source/Emitter is the combination of single-ended open source interface.
//
#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_DRAIN)
#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_SOURCE)

/* Bit 3 express GPIO suspend/resume and reset persistence */
#define GPIO_PERSISTENT 0
#define GPIO_TRANSITORY 8

/* Bit 4 express pull up */
#define GPIO_PULL_UP 16

/* Bit 5 express pull down */
#define GPIO_PULL_DOWN 32

#endif
